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BUN
Design
    • Contoured back-up rings provide a comfortable fit when paired with an oring.
    • Provides good extrusion resistance to a paired oring to increase pressure handling capabilities.
Material
    • 70A Nitrile - Precision Moulded
    • Most economical solution to enhance oring capability.
Application
    • Suitable for static and dynamic applications.
Fluids
    • Hydraulic fluids, petroleum fuels and oils

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Product Code
Description
Availability
Qty
BUN-467
Backup Contoured NBR90 BS467 - 19.000 X 19.500 X 0.096"
-
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BUN-467 - Backup Contoured NBR90 BS467 - 19.000 X 19.500 X 0.096"
Product Information
Product CodeBUN-467
DescriptionBackup Contoured NBR90 BS467 - 19.000 X 19.500 X 0.096"
ProfileBUN
Internal Diameter19.000
Outer Diameter19.500
Seal Height0.096
Max. Temp C110
Alt. Part No.R80467
BUN-468
Backup Contoured NBR90 BS468 - 19.500 X 20.000 X 0.096"
0
BUN-468 - Backup Contoured NBR90 BS468 - 19.500 X 20.000 X 0.096"
Product Information
Product CodeBUN-468
DescriptionBackup Contoured NBR90 BS468 - 19.500 X 20.000 X 0.096"
ProfileBUN
Internal Diameter19.500
Outer Diameter20.000
Seal Height0.096
Max. Temp C110
Alt. Part No.R80468
BUN-389
Backup Contoured NBR90 BS389 - 20.000 X 20.375 X 0.060"
0
BUN-389 - Backup Contoured NBR90 BS389 - 20.000 X 20.375 X 0.060"
Product Information
Product CodeBUN-389
DescriptionBackup Contoured NBR90 BS389 - 20.000 X 20.375 X 0.060"
ProfileBUN
Internal Diameter20.000
Outer Diameter20.375
Seal Height0.060
Max. Temp C110
Alt. Part No.R80389
BUN-469
Backup Contoured NBR90 BS469 - 20.000 X 20.500 X 0.096"
0
BUN-469 - Backup Contoured NBR90 BS469 - 20.000 X 20.500 X 0.096"
Product Information
Product CodeBUN-469
DescriptionBackup Contoured NBR90 BS469 - 20.000 X 20.500 X 0.096"
ProfileBUN
Internal Diameter20.000
Outer Diameter20.500
Seal Height0.096
Max. Temp C110
Alt. Part No.R80469
BUN-390
Backup Contoured NBR90 BS390 - 21.000 X 21.375 X 0.060"
13
BUN-390 - Backup Contoured NBR90 BS390 - 21.000 X 21.375 X 0.060"
Product Information
Product CodeBUN-390
DescriptionBackup Contoured NBR90 BS390 - 21.000 X 21.375 X 0.060"
ProfileBUN
Internal Diameter21.000
Outer Diameter21.375
Seal Height0.060
Max. Temp C110
Alt. Part No.R80390
BUN-470
Backup Contoured NBR90 BS470 - 21.000 X 21.500 X 0.096"
0
BUN-470 - Backup Contoured NBR90 BS470 - 21.000 X 21.500 X 0.096"
Product Information
Product CodeBUN-470
DescriptionBackup Contoured NBR90 BS470 - 21.000 X 21.500 X 0.096"
ProfileBUN
Internal Diameter21.000
Outer Diameter21.500
Seal Height0.096
Max. Temp C110
Alt. Part No.R80470
BUN-391
Backup Contoured NBR90 BS391 - 22.000 X 22.375 X 0.060"
-
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BUN-391 - Backup Contoured NBR90 BS391 - 22.000 X 22.375 X 0.060"
Product Information
Product CodeBUN-391
DescriptionBackup Contoured NBR90 BS391 - 22.000 X 22.375 X 0.060"
ProfileBUN
Internal Diameter22.000
Outer Diameter22.375
Seal Height0.060
Max. Temp C110
Alt. Part No.R80391
BUN-471
Backup Contoured NBR90 BS471 - 22.000 X 22.500 X 0.096"
78
BUN-471 - Backup Contoured NBR90 BS471 - 22.000 X 22.500 X 0.096"
Product Information
Product CodeBUN-471
DescriptionBackup Contoured NBR90 BS471 - 22.000 X 22.500 X 0.096"
ProfileBUN
Internal Diameter22.000
Outer Diameter22.500
Seal Height0.096
Max. Temp C110
Alt. Part No.R80471
BUN-392
Backup Contoured NBR90 BS392 - 23.000 X 23.375 X 0.060"
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BUN-392 - Backup Contoured NBR90 BS392 - 23.000 X 23.375 X 0.060"
Product Information
Product CodeBUN-392
DescriptionBackup Contoured NBR90 BS392 - 23.000 X 23.375 X 0.060"
ProfileBUN
Internal Diameter23.000
Outer Diameter23.375
Seal Height0.060
Max. Temp C110
Alt. Part No.R80392
BUN-472
Backup Contoured NBR90 BS472 - 23.000 X 23.500 X 0.096"
0
BUN-472 - Backup Contoured NBR90 BS472 - 23.000 X 23.500 X 0.096"
Product Information
Product CodeBUN-472
DescriptionBackup Contoured NBR90 BS472 - 23.000 X 23.500 X 0.096"
ProfileBUN
Internal Diameter23.000
Outer Diameter23.500
Seal Height0.096
Max. Temp C110
Alt. Part No.R80472
BUN-393
Backup Contoured NBR90 BS393 - 24.000 X 24.375 X 0.060"
-
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BUN-393 - Backup Contoured NBR90 BS393 - 24.000 X 24.375 X 0.060"
Product Information
Product CodeBUN-393
DescriptionBackup Contoured NBR90 BS393 - 24.000 X 24.375 X 0.060"
ProfileBUN
Internal Diameter24.000
Outer Diameter24.375
Seal Height0.060
Max. Temp C110
Alt. Part No.R80393
BUN-473
Backup Contoured NBR90 BS473 - 24.000 X 24.500 X 0.096"
0
BUN-473 - Backup Contoured NBR90 BS473 - 24.000 X 24.500 X 0.096"
Product Information
Product CodeBUN-473
DescriptionBackup Contoured NBR90 BS473 - 24.000 X 24.500 X 0.096"
ProfileBUN
Internal Diameter24.000
Outer Diameter24.500
Seal Height0.096
Max. Temp C110
Alt. Part No.R80473
BUN-394
Backup Contoured NBR90 BS394 - 25.000 X 24.375 X 0.060"
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BUN-394 - Backup Contoured NBR90 BS394 - 25.000 X 24.375 X 0.060"
Product Information
Product CodeBUN-394
DescriptionBackup Contoured NBR90 BS394 - 25.000 X 24.375 X 0.060"
ProfileBUN
Internal Diameter25.000
Outer Diameter24.375
Seal Height0.060
Max. Temp C110
Alt. Part No.R80394
BUN-474
Backup Contoured NBR90 BS474 - 25.000 X 25.500 X 0.096"
-
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BUN-474 - Backup Contoured NBR90 BS474 - 25.000 X 25.500 X 0.096"
Product Information
Product CodeBUN-474
DescriptionBackup Contoured NBR90 BS474 - 25.000 X 25.500 X 0.096"
ProfileBUN
Internal Diameter25.000
Outer Diameter25.500
Seal Height0.096
Max. Temp C110
Alt. Part No.R80474
BUN-395
Backup Contoured NBR90 BS395 - 26.000 X 25.375 X 0.060"
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BUN-395 - Backup Contoured NBR90 BS395 - 26.000 X 25.375 X 0.060"
Product Information
Product CodeBUN-395
DescriptionBackup Contoured NBR90 BS395 - 26.000 X 25.375 X 0.060"
ProfileBUN
Internal Diameter26.000
Outer Diameter25.375
Seal Height0.060
Max. Temp C110
Alt. Part No.R80395
BUN-475
Backup Contoured NBR90 BS475 - 26.000 X 26.500 X 0.096"
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BUN-475 - Backup Contoured NBR90 BS475 - 26.000 X 26.500 X 0.096"
Product Information
Product CodeBUN-475
DescriptionBackup Contoured NBR90 BS475 - 26.000 X 26.500 X 0.096"
ProfileBUN
Internal Diameter26.000
Outer Diameter26.500
Seal Height0.096
Max. Temp C110
Alt. Part No.R80475
 
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